Safety net quick release hook

Abstract

The utility model relates to a kind of safety net quick-release hooks, including first U-shaped strip and second U-shaped strip, the bottom end of first U-shaped strip extends right screw rod, screw rod is screwed with internal thread sleeve, the outside of internal thread sleeve is equipped with second sleeve, second sleeve is welded and fixed with the bottom end of second U-shaped strip, the left end and right end of internal thread sleeve are respectively provided with locking ring and convex ring for limiting, by adopting the above technical scheme, when needing to install safety net quick-release hook device, the opening of first U-shaped strip and second U-shaped strip is aligned with the lower flange of steel beam, rotating internal thread sleeve can drive second U-shaped strip close to first U-shaped strip, when the inner wall of second U-shaped strip is closely attached with the lower flange of one side of steel beam, locking ring needs to be rotated to fix position at this time, when needing to remove safety net quick-release hook device, again by reverse rotating locking ring and internal thread sleeve, the purpose that whole device can be quickly installed or removed, and steel beam can not be damaged is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of safety protection for high-altitude operations, and in particular to a quick-release hook for safety nets. Background Technology

[0002] In engineering fields such as construction, bridge building, and stage construction, the installation and removal of safety nets are crucial aspects of safety protection for high-altitude operations. Traditional methods of fixing safety nets often involve welding, bolting, or binding to the lower flange of steel beams. While these methods are stable, they suffer from low installation efficiency, difficulty in removal, and easy damage to the surface of the steel beams. This is especially true in temporary projects that require frequent disassembly and assembly, where the drawbacks of traditional fixing methods become more pronounced. These methods not only increase construction time but may also damage the steel beam structure due to repeated welding or bolt tightening, affecting its load-bearing capacity and service life.

[0003] Currently, the common quick-release structure uses a threaded adjustment hook, which locks and unlocks by rotating a sleeve or screw. However, existing threaded hooks usually have problems such as limited adjustment range, insufficient locking force, or the need to completely unscrew the thread during disassembly and assembly, which makes them inconvenient to use. They are not only time-consuming and damage the surface of the steel beam, but may also affect repeated use due to thread damage. Therefore, it is necessary to design a quick-release hook for safety nets. Utility Model Content

[0004] The purpose of this invention is to provide a quick-release hook for safety nets to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A quick-release hook for a safety net includes a first U-shaped strip and a second U-shaped strip. The open sides of the first and second U-shaped strips are mirror images of each other. A right-facing screw extends from the bottom right side of the first U-shaped strip. An internally threaded sleeve is screwed onto the screw. A second sleeve is rotatably mounted on the outer side of the internally threaded sleeve. The top end of the second sleeve is welded and fixed to the bottom end of the second U-shaped strip. A thread is provided on the outer left end of the internally threaded sleeve. A locking ring is screwed onto the outer left end of the internally threaded sleeve. A raised ring is provided on the right side of the internally threaded sleeve.

[0007] By adopting the above technical solution, when it is necessary to install the quick-release hook device for the safety net, the opening of the first U-shaped strip is aligned with the lower flange of the steel beam, and the opening of the second U-shaped strip is aligned with the lower flange of the steel beam on the other side. Because the inner wall of the internal threaded sleeve is screwed to the screw rod, and the outer wall is rotatably connected to the second sleeve, and the top of the second sleeve is welded with a second U-shaped plate, rotating the internal threaded sleeve can drive the second U-shaped strip closer to the first U-shaped strip. When the inner wall of the second U-shaped strip is tightly aligned with the lower flange of the steel beam on the other side, the locking ring at the left end of the internal threaded sleeve needs to be rotated to firmly lock the second U-shaped strip onto the internal threaded sleeve. The first U-shaped strip and the second U-shaped strip can then firmly hold the lower flange of the steel beam. When it is necessary to remove the quick-release hook device for the safety net, the locking ring and the internal threaded sleeve are rotated in the opposite direction to disengage the second U-shaped strip from one end of the lower flange, thereby achieving the overall removal of the device. This achieves the goal of quickly installing or removing the entire device without damaging the steel beam.

[0008] In a further embodiment, a pressing hook is welded to the side of the first U-shaped strip away from the second U-shaped strip. The pressing hook includes a support arm and a pressing arm, the support arm and the pressing arm forming a rectangular ring, and the right side of the support arm is fixedly connected to the first U-shaped strip.

[0009] By adopting the above technical solution, the press hook can achieve a double safety mechanism to ensure that the rope or cable will not easily fall off the press hook.

[0010] In a further embodiment, the outer sides of the first U-shaped strip and the second U-shaped strip are wrapped with rubber pads.

[0011] By adopting the above technical solution, when clamping the lower flange of the steel beam, the rubber pad can prevent the first U-shaped strip from directly contacting the lower flange of the steel beam, and prevent the second U-shaped strip from directly contacting the lower flange on the other side of the steel beam, thus preventing the first and second U-shaped strips from scratching and damaging the surface of the lower flange.

[0012] In a further embodiment, the outer ring of the locking ring is provided with a plurality of protrusions at equal intervals.

[0013] By adopting the above technical solution, the protrusion can further play a limiting role, preventing the second sleeve from going over the locking ring and affecting the stability of the device.

[0014] In a further embodiment, the outer wall of the pressing hook is provided with an anti-corrosion and anti-rust coating.

[0015] By adopting the above technical solution, the anti-corrosion and anti-rust coating extends the life of the press hook.

[0016] In a further embodiment, a handle is fixedly connected to the right side of the convex ring.

[0017] By adopting the above technical solution, the handle is fixedly connected to the right side of the convex ring, which makes it easy for the staff to rotate the internal threaded sleeve, so that the device can be quickly installed on the steel beam or quickly removed from the steel beam.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. By mirroring the opening sides of the first and second U-shaped strips, the opening side of the first U-shaped strip is fitted with the lower flange of one end of the steel beam, and the opening side of the second U-shaped strip is tightly fitted with the lower flange of the other end of the steel beam. The second U-shaped strip is fixedly welded to the second sleeve, and the second sleeve is rotatably connected to the internal threaded sleeve. The internal threaded sleeve is screwed to the screw rod. The left and right sides of the internal threaded sleeve are respectively provided with locking rings and convex rings. Rotating the internal threaded sleeve in the opposite direction can achieve the effect of quickly removing the device without scratching the steel beam. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram illustrating the structure of the press hook of this utility model.

[0022] In the diagram, 1. First U-shaped strip; 2. Second U-shaped strip; 3. Screw; 4. Internal threaded sleeve; 5. Second sleeve; 6. Locking ring; 7. Protruding ring; 8. Press hook; 81. Support arm; 82. Press arm; 9. Handle. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0025] Example 1:

[0026] like Figures 1-2As shown, a quick-release hook for a safety net includes a first U-shaped strip 1 and a second U-shaped strip 2. The internal bends of the first and second U-shaped strips are at right angles, which facilitates complete contact with the lower flange of the steel beam. The open sides of the first U-shaped strip 1 and the second U-shaped strip 2 are mirror images of each other. A right-facing screw 3 extends from the bottom right side of the first U-shaped strip 1. An internally threaded sleeve 4 is screwed onto the screw 3. A second sleeve 5 is rotatably installed on the outer side of the internally threaded sleeve 4. The top end of the second sleeve 5 is welded and fixed to the bottom end of the second U-shaped strip 2. A thread is provided on the outer left end of the internally threaded sleeve 4. A locking ring 6 is screwed onto the outer left end of the internally threaded sleeve 4. A protruding ring 7 is provided on the right side of the internally threaded sleeve 4.

[0027] A pressing hook 8 is welded to the side of the first U-shaped strip 1 away from the second U-shaped strip 2. The pressing hook 8 includes a support arm 81 and a pressing arm 82. The support arm 81 and the pressing arm 82 form a rectangular ring. Three arms of the rectangular ring are the support arm 81 and one arm is the pressing arm 82. The right side of the support arm 81 is fixedly connected to the first U-shaped strip 1. The outer sides of the first U-shaped strip 1 and the second U-shaped strip 2 are wrapped with rubber pads. The outer ring of the locking ring 6 is provided with multiple protrusions at equal intervals. The protrusions can further restrict the rotation of the second sleeve 5. The outer wall of the pressing hook 8 is provided with an anti-corrosion and anti-rust coating. A handle 9 is fixedly connected to the right side of the protruding ring 7. The handle 9 makes it easy for the operator to rotate the internal threaded sleeve 4.

[0028] Specific implementation process: When installing the quick-release hooks for the safety net, the opening of the first U-shaped strip 1 needs to be aligned with the lower flange of the steel beam, and the first U-shaped strip 1 should be in contact with the lower flange. The opening of the second U-shaped strip 2 should be aligned with the lower flange on the other side of the steel beam. Then, rotate the internal threaded sleeve 4 on the screw 3, driving the second sleeve 5 rotatably connected to the internal threaded sleeve 4 to move the second U-shaped strip 2 closer to the first U-shaped strip 1. When the inner wall of the second U-shaped strip 2 is tightly in contact with the lower flange on the other side of the steel beam, the internal threaded sleeve 4 can no longer move closer to the first U-shaped strip 1. At this time, rotate the locking ring 6 at the left end of the internal threaded sleeve 4 to restrict the internal threaded sleeve. The rotation of the inner threaded sleeve 4 is prevented from causing relative rotation between the second sleeve 5 and the inner threaded sleeve 4 because the right end of the inner threaded sleeve 4 is provided with a convex ring 7. The first U-shaped strip 1 and the second U-shaped strip 2 will firmly hold the lower flanges on both sides of the steel beam, achieving the purpose of quickly installing the safety net quick-release hook. When removing the safety net quick-release hook, the locking ring 6 is rotated in the opposite direction so that the rotation of the second sleeve 5 is no longer restricted by the locking ring 6. Then the inner threaded sleeve 4 is rotated in the opposite direction to drive the second U-shaped strip 2 to move away from the first U-shaped strip 1, achieving the purpose of quickly removing the safety net quick-release hook without damaging the surface of the steel beam.

[0029] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A quick-release hook for a safety net, comprising a first U-shaped strip (1) and a second U-shaped strip (2), wherein the open sides of the first U-shaped strip (1) and the second U-shaped strip (2) are mirror images of each other, characterized in that: The bottom right side of the first U-shaped bar (1) has a right-facing screw (3), which is screwed to an internal threaded sleeve (4). A second sleeve (5) is rotatably installed on the outside of the internal threaded sleeve (4). The top end of the second sleeve (5) is welded and fixed to the bottom end of the second U-shaped bar (2). The left side of the internal threaded sleeve (4) is threaded. A locking ring (6) is screwed to the left side of the internal threaded sleeve (4). A convex ring (7) is provided on the right side of the internal threaded sleeve (4).

2. The quick-release hook for a safety net according to claim 1, characterized in that: A pressing hook (8) is welded to the side of the first U-shaped strip (1) away from the second U-shaped strip (2). The pressing hook (8) includes a support arm (81) and a pressing arm (82). The support arm (81) and the pressing arm (82) form a rectangular ring. The right side of the support arm (81) is fixedly connected to the first U-shaped strip (1).

3. The quick-release hook for a safety net according to claim 1, characterized in that: The outer sides of the first U-shaped strip (1) and the second U-shaped strip (2) are wrapped with rubber pads.

4. A quick-release hook for a safety net according to claim 1, characterized in that: The outer ring of the locking ring (6) is provided with multiple protrusions at equal intervals.

5. A quick-release hook for a safety net according to claim 2, characterized in that: The outer wall of the pressing hook (8) is provided with an anti-corrosion and anti-rust coating.

6. A quick-release hook for a safety net according to claim 1, characterized in that: A handle (9) is fixedly connected to the right side of the protruding ring (7).

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